Hypertriglyceridemia Is Associated With White Blood Cell Count and Red Cell Distribution Width: A Gender Stratified Analysis in a Population-Based Study

Hypertriglyceridemia is a common form of dyslipidemia and is associated with several comorbidities, such as increased risk of pancreatitis and cardiovascular diseases (CVD). The white blood cell (WBC) count is a non-specific inflammatory marker associated with a wide variety of diseases such as diabetes, hypertension, and atherosclerotic cardiovascular disease. The objective of this study was to perform a gender-stratified examination of the association between hypertriglyceridemia and hematological parameters in a large sample of Iranian population. The triglyceride (TG) levels and hematological parameters were measured in 9,780 participants (40% males and 60% females) aged 35-65 years, enrolled in a population-based cohort (MASHAD) study in northeastern Iran. Participants were stratified into three groups based on the definition of hypertriglyceridemia: TG<150 mg/dl (n=6521), TG=150-199 mg/dl (n=1597), and TG≥200 mg/dl (n=1662). A complete blood count (CBC) was obtained for all the subjects. The mean WBC count increased with increasing severity of hypertriglyceridemia among both men and women. Participants with high and very high TG levels had significantly higher WBC count, RBC count, platelet count, hemoglobin, hematocrit, and mean corpuscular hemoglobin concentration and significantly lower RDW. After performing multivariate logistic regression, WBC count and RDW were independently related to hypertriglyceridemia. In conclusion, hypertriglyceridemia is associated with elevated WBC count which may partly explain the observed association between hypertriglyceridemia and CVD.